Light emitting diode bulb with a cup-shaped heat dissipating structure

Abstract

An LED bulb comprises a lamp cup, a substrate, a power connecting part, and a cover plate. The lamp cup is a two-piece structure; a power driver is further disposed in the power connecting part. The substrate is disposed in the lamp cup, while the power connecting part connects with the lamp cup. When the light sources and the power structure generate heat, the generated heat can be transferred outwards and dissipated through the lamp cup or the power connecting part. Because the heat generated by both of the heat sources in the lamp cup, respectively, the co-heating effect induced by the light sources and the power driver can be avoided. The overall structure is manufactured by materials having superior thermal conductivity. Thereby, with the structure, heat dissipating process can be accelerated. The lifetime of the light sources can be improved substantially.

The invention claimed is: 
     
       1. A light emitting diode bulb, comprising:
 a lamp cup, including a light receiving part and a lamp-cup part, said light receiving part substantially being a first hollow cylinder, said first hollow cylinder having a first accommodating space above, a substrate disposed in said first accommodating space, said lamp-cup part having a second hollow cylinder, said second hollow cylinder having a second accommodating space at the recessed bottom, said first hollow cylinder contacted with said second hollow cylinder; and 
 a power connecting part, having a third hollow cylinder, said third hollow cylinder having a power driver therein, and disposed in said second accommodating space; 
 wherein said light receiving part further includes a first annular body and a second annular body disposed at the upper end and the peripheral side of said first hollow cylinder and extending outwards in sequence, respectively; said lamp-cup part further includes a first annular groove and a second annular groove disposed at upper end of said second hollow cylinder and extending from bottom up in sequence, said second annular body is wedged in said second annular groove for assembling said part and said lamp cup part. 
 
     
     
       2. The light emitting diode bulb of  claim 1 , and further comprising a lampshade disposed on said first accommodating space of said lamp cup part. 
     
     
       3. The light emitting diode bulb of  claim 2 , wherein said lampshade is a curved or flat lampshade. 
     
     
       4. The light emitting diode bulb of  claim 1 , wherein a plurality of third heat dissipating holes are disposed at the bottom part of said lamp-cup part. 
     
     
       5. The light emitting diode bulb of  claim 4 , wherein a cover plate is disposed on said third hollow cylinder. 
     
     
       6. The light emitting diode bulb of  claim 1 , wherein the diameter of said first annular body is smaller than the diameter of said second annular body. 
     
     
       7. The light emitting diode bulb of  claim 1 , wherein a plurality of first heat dissipating holes are disposed on said first annular body and said second annular body. 
     
     
       8. The light emitting diode bulb of  claim 1 , wherein the diameter of said first annular groove is smaller than the diameter of said second annular groove. 
     
     
       9. The light emitting diode bulb of  claim 1 , wherein a plurality of second heat dissipating holes are disposed on said first annular groove and said second annular groove. 
     
     
       10. The light emitting diode bulb of  claim 1 , wherein said power connecting part and said lamp-cup part are connected by wedging or scarfing. 
     
     
       11. A light emitting diode bulb, comprising:
 a lamp cup, including a light receiving part and a lamp-cup part, said light receiving part having a first hollow cylinder, said first hollow cylinder having a first accommodating space above, said lamp-cup part having a second hollow cylinder, said second hollow cylinder have a second accommodating space at the recessed bottom, said first hollow cylinder stacked on said second hollow cylinder, further including a substrate disposed in said first accommodating space of said lamp-cup part, and further including a heat dissipating member stacked between said first hollow cylinder and said second accommodating space; and 
 a power connecting part, having a third hollow cylinder, said third hollow cylinder having a power driver therein, and disposed in said second accommodating space; 
 wherein said light receiving part further includes a first annular body and a second annular body disposed at the upper end and the peripheral side of said first hollow cylinder and extending outwards in sequence, respectively; said lamp-cup part further includes a first annular groove and a second annular groove disposed at upper end of said second hollow cylinder and extending from bottom up in sequence, said second annular body is wedged in said second annular groove for assembling said light receiving part and said lamp cup part; and a plurality of first heat dissipating holes are disposed on said first annular body and said second annular body. 
 
     
     
       12. The light emitting diode bulb of  claim 11 , wherein said heat dissipating member includes a substrate and a plurality of heat sink members disposed on the same side of said substrate. 
     
     
       13. The light emitting diode bulb of  claim 12 , wherein said plurality of heat sink members are three-dimensional pillars. 
     
     
       14. The light emitting diode bulb of  claim 12 , wherein said plurality of heat sink members are sawtooth-shaped thin plates. 
     
     
       15. A light emitting diode bulb, comprising:
 a lamp cup, including a light receiving part, and said light receiving part having an annular recessed part on the bottom edge, said light receiving part having a first hollow cylinder, said lamp-cup part having a second hollow cylinder; 
 a substrate, disposed at the bottom of said light receiving part; and 
 a power connecting part, having a power driver therein, and said power connecting part disposed below said lamp cup; 
 wherein said light receiving part further includes a first annular body and a second annular body disposed at the upper end and the peripheral side of said first hollow cylinder and extending outwards in sequence, respectively; said lamp-cup part further includes a first annular groove and a second annular groove disposed at upper end of said second hollow cylinder and extending from bottom up in sequence, said second annular body is wedged in said second annular groove for assembling said light receiving part and said lamp cup part; a plurality of second heat dissipating holes are disposed on said first annular groove and said second annular groove. 
 
     
     
       16. The light emitting diode bulb of  claim 15 , wherein said annular recessed part has a plurality of eighth heat dissipating holes. 
     
     
       17. A light emitting diode bulb, comprising:
 a lamp cup, including a light receiving part and a lamp-cup part, said light receiving part having a first hollow cylinder, said first hollow cylinder having a first accommodating space above, said lamp-cup part having a second hollow cylinder, said second hollow cylinder have a second accommodating space at the recessed bottom, said first hollow cylinder stacked on said second hollow cylinder, said light receiving part further including a first annular body and a second annular body disposed at the upper end and the peripheral side of said first hollow cylinder and extending outwards in sequence, respectively; said first annular body and second annular body having a plurality of first heat dissipating holes, said lamp-cup part further including a first annular groove and a second annular groove disposed at upper end of said second hollow cylinder and extending from bottom up in sequence, said first annular groove and second annular groove having a plurality of second heat dissipating holes; and 
 further including a substrate disposed between said first accommodating space of said lamp-cup part; and 
 a power connecting part, having a third hollow cylinder, said third hollow cylinder having a power driver therein, and disposed in said second accommodating space. 
 
     
     
       18. The light emitting diode bulb of  claim 17 , and further comprising a downlight frame, including a plurality of spring buckles, disposed on a ceiling, and said bulb disposed in said downlight frame by said plurality of spring buckles. 
     
     
       19. The light emitting diode bulb of  claim 17 , and further comprising a rail frame, including a movable shaft and a plurality of fixed shafts, an end of said movable shaft passing through a rail, and an end of said plurality of fixed shafts fixed in said first heat dissipating holes and said second heat dissipating holes of said bulb. 
     
     
       20. The light emitting diode bulb of  claim 17 , and further comprising a clipping frame, including clipping part, disposed on a ceiling, and clipping a first heat dissipating hole and a second heat dissipating hole of said bulb. 
     
     
       21. The light emitting diode bulb of  claim 17 , and further comprising a hollow circular frame, including a hollow circle and a plurality of clipping springs, disposed on a ceiling, and said bulb disposed in said hollow circle by said plurality of clipping springs.